Qué ha sido

what has become of

→ qué
phrase Uncommon #22,402
what has become of Often followed by “de” and a person or thing when asking what happened to them or where they are now.
SP: ¿Qué ha sido de tu hermano?
EN: What has become of your brother?

¿Qué ha sido del cuerno que sonaba?

Whatever happened to the horn that was sounding?

— El señor de los anillos: Las dos torres (2002)

¿Qué ha sido de Su Alteza?

Whatever happened to His Highness?

— Nausicaä del Valle del Viento (1984)

¿Qué ha sido ese ruido?

What was that noise?

— 암살 (2015)

¿Qué ha sido del jinete y su caballo?

Whatever happened to the rider and his horse?

— El señor de los anillos: Las dos torres (2002)

¿Qué ha sido de su hijo?

What happened to his son?

¿Qué ha sido eso?

What was that?

— Los excéntricos Tenenbaums (2001)

¿Qué ha sido del resto?

What happened to the rest?

— Nausicaä del Valle del Viento (1984)

¡¿Qué ha sido eso?!

What was that?!

— Las diabólicas (1955)

¿Qué ha sido de él desde entonces?

What has he been up to since then?

¿Qué ha sido qué?

What was what?

— Gángster Americano (2007)

¿Qué ha sido ese grito?

What was that scream?

— El Huésped (2006)